U.S. patent application number 11/642284 was filed with the patent office on 2007-06-21 for convertible top system with two rigid roof parts arranged in tandem in their closed position.
Invention is credited to Tobias Wagner.
Application Number | 20070138828 11/642284 |
Document ID | / |
Family ID | 37846127 |
Filed Date | 2007-06-21 |
United States Patent
Application |
20070138828 |
Kind Code |
A1 |
Wagner; Tobias |
June 21, 2007 |
Convertible top system with two rigid roof parts arranged in tandem
in their closed position
Abstract
A convertible top system includes at least two rigid top parts
with a rear top part being supported at a vehicle body in such a
manner that it can swivel and being pivoted with a front top part.
A drive unit is provided for each top part for a coordinated
opening or closing motion of the two top parts, with at least one
drive unit being a piston-cylinder system with one fixed component
and one movable component. A fixed component of the piston-cylinder
system is mounted at the rear or front top part. A guiding
component for a guide unit is rigidly mounted at the fixed
component of the piston-cylinder system, with the guide unit being
fixed to the movable component of the piston-cylinder system. A
bearing for a lever is positioned at the guiding component with the
lever being connected to the other of the front or rear top part
not mounted to the fixed component on one side and to the other
side, a connection piece is coupled between the guiding component
and the lever.
Inventors: |
Wagner; Tobias; (Hamburg,
DE) |
Correspondence
Address: |
JORDAN AND HAMBURG LLP
122 EAST 42ND STREET
SUITE 4000
NEW YORK
NY
10168
US
|
Family ID: |
37846127 |
Appl. No.: |
11/642284 |
Filed: |
December 19, 2006 |
Current U.S.
Class: |
296/108 |
Current CPC
Class: |
B60J 7/1269
20130101 |
Class at
Publication: |
296/108 |
International
Class: |
B60J 7/00 20060101
B60J007/00 |
Foreign Application Data
Date |
Code |
Application Number |
Dec 19, 2005 |
DE |
10 2005 061 201.6 |
Claims
1.-7. (canceled)
8. A convertible top system, comprising: at least two rigid top
parts including a rear top part and a front top part, said rear top
part being pivoted with the front top part, said rear top part
being supported at a body in such a way that said rear top part can
swivel relative to the body; a drive unit being provided for each
of said at least two top parts for a coordinated opening or closing
motion of the two top parts, with at least one drive unit being a
piston-cylinder system with one fixed component and one movable
component, wherein the fixed component of the piston-cylinder
system is mounted to the rear top part; a guide unit being mounted
to the movable component of the piston-cylinder system; a guiding
component for cooperating with the guide unit being rigidly mounted
to the fixed component of the piston-cylinder system; and a lever
pivotably mounted via a bearing to the guiding component, a first
side of said lever being connected with the front top part and a
second side of said level being coupled to the guiding component
via a connection piece.
9. A convertible top system according to claim 8, wherein the guide
unit is a straight-line mechanism.
10. A convertible top system according to claim 9, wherein the
guide unit is a slotted link.
11. Convertible top system according to claim 8, wherein the
bearing in the guiding component is located below the guide
unit.
12. A convertible top system according to claim 8, wherein the
connection piece is shorter than the guide unit.
13. A convertible top system according to claim 8, wherein the
connection piece comprises two links.
14. A convertible top system, comprising: at least two rigid top
parts including a rear top part and a front top part, said rear top
part being pivoted with the front top part, said rear top part
being supported at a body in such a way that said rear top part can
swivel relative to the body; a drive unit being provided for each
of said at least two top parts for a coordinated opening or closing
motion of the two top parts, with at least one drive unit being a
piston-cylinder system with one fixed component and one movable
component, wherein the fixed component of the piston-cylinder
system is mounted to the front top part; a guide unit being mounted
to the movable component of the piston-cylinder system; a guiding
component for cooperating with the guide unit being rigidly mounted
to the fixed component of the piston-cylinder system; and a lever
pivotably mounted via a bearing to the guiding component, a first
side of said lever being connected with the rear top part and a
second side of said lever being coupled to the guiding component
via a connection piece.
15. A convertible top system according to claim 14, wherein the
guide unit is a straight-line mechanism.
16. A convertible top system according to claim 15, wherein the
guide unit is a slotted link.
17. Convertible top system according to claim 14, wherein the
bearing in the guiding component is located below the guide
unit.
18. A convertible top system according to claim 14, wherein the
connection piece is shorter than the guide unit.
19. A convertible top system according to claim 14, wherein the
connection piece comprises two links.
Description
BACKGROUND OF THE INVENTION
[0001] The invention relates to a convertible top system with two
rigid roof parts arranged in tandem in their closed position
according to the generic part of the first claim.
[0002] The convertible top systems known are equipped with complex
multijoint cinematic arrangements that are normally driven by
hydraulic cylinders and transmit the rotating motions by rods to
the top parts that are to be moved; see DE 10111705 A1, EP 0749859
A1.
[0003] Moreover, the use of swivel motors as actuators is known.
They are rigidly mounted at the body and/or they are mounted at the
important joint points between the rigid top parts in such a way
that they can be moved and they are driven electrically or
hydraulically; see EP 1160113 A2.
[0004] The motion of the front rigid roof parts of folding tops is
initiated via a positively controlled four-joint mechanism the
components of which are specifically designed for the corresponding
top. A multivalent use of the four-joint mechanism for vehicle tops
with other forms or dimensions is not possible. Moreover, the
driving torque being effective at the rotation axis is subject to
strong variations over the motion travel of the top parts and is
particularly low in the end positions of the motion travel. The
cinematic components cannot be covered at all or only with high
efforts.
[0005] Certainly, swivel motors allow reaching the necessary swivel
angle and the required constant driving torque, but due to their
constructional design they cannot be installed outside the visual
range of the top because the rotation axis of the front top part
must be arranged at a very low position.
SUMMARY OF THE INVENTION
[0006] It is the object of the present invention to remove the
disadvantages just mentioned and to develop a drive system for the
individual top parts that has low space requirements, can be easily
manufactured and installed, and has a principally independent form
and size so that it allows its multivalent use.
BRIEF DESCRIPTION OF THE INVENTION
[0007] According to this invention, this object is realized by the
features of the first or second patent claim. Preferable
embodiments are subject matter of the dependent claims.
Principally, this invention can also be used for convertible car
tops that consist of more than two movable rigid parts that are
connected with each other. The drive units for the top parts are
favorably provided at both sides. In an advantageous embodiment of
this invention, the guide is designed as a coulisse in which the
element slides like a slide piece. The bearing for the lever that
is simultaneously the pivot bearing of the front top part swiveling
with the rear top part is located at the coulisse frame laterally
to the longitudinal extension of the guide that itself is designed
regularly as a straight-line mechanism. The connection piece is
principally shorter than the guide. It is part of the invention
that the cylinder is moved in relation to the fixed piston, and
then it is possible that the guide is connected with the piston and
the guided element with the cylinder. A control unit is provided
for the simultaneous and coordinated activation of the different
drives.
[0008] The advantages of this invention are the mostly constant
torque at the rotation axis of the front top part, the slim style
of the drive unit and its easy integration into the vehicle top,
the avoidance of normally usual main rod and the resulting optimum
design of the interior rooflining, and finally the big rotation
angle (180.degree.) that allows the universal use of the fluid
cylinder. Principally, the cylinder-piston combination is based on
liquid or gas or is electronically driven.
BRIEF DESCRIPTION OF THE DRAWINGS
[0009] In the following, the invention is explained in more detail
by means of schematic drawings. They show:
[0010] FIG. 1 an inventive convertible top system,
[0011] FIG. 2 the convertible top system in the semi-open
position,
[0012] FIG. 3 the convertible top system in the open (put down)
position,
[0013] FIG. 4 the inventive drive in perspective view for the front
top part in starting position,
[0014] FIG. 5 the drive according to FIG. 4 in the intermediate
position according to FIG. 2, and
[0015] FIG. 6 the drive according to FIG. 4 in the final position
according to FIG. 3.
DETAILED DESCRIPTION
[0016] FIG. 1 shows a convertible top system 13 including two rigid
top parts 10, 11 and one drive unit 12. Said system is supported at
a main bearing 15 at a sketched out body 14 in such a way that it
can swivel around an axis X-X that is in perpendicular orientation
to the plane of projection. The main bearing 15 is fixed at points
16 with the body 14, for example by a screw connection, and at a
console 18 that is provided with stiffening ribs 17 it carries a
fluid drive 19 for the rear top part 11 that is rigidly mounted
with the fluid drive 19. The fluid drive 19 is controlled by a
control unit 21 via lines 20 like the drive unit 12, which is also
a fluid drive. The drive unit 12 being explained in more detail in
the FIGS. 4 to 6 is rigidly mounted with the two top parts 10, 11
and causes the swiveling motion of the top part 10 relative to the
top part 11 around an axis Y-Y that is parallel to the axis X-X.
The fluid drive 19 can also be replaced by an electric drive. In
this case, the two drive units 12 and 19 are also synchronized by
the control unit. In FIG. 1, motion elements 22 are additionally
provided for the rear-window shelf that is not shown. It goes
without saying that the main bearing 15 and the drive units 12, 19
are provided at both sides of the vehicle body 14.
[0017] In FIG. 1, the convertible tops system 13 is represented in
the starting position, the closed position. FIG. 2 shows a partly
opened top system. The rear top part 11 with the fluid drive 19 is
clearly swiveled compared to the starting position. Simultaneously,
the front top part 10 is swiveled around the axis Y-Y due to the
motion-coordination of the control unit 21 that is only represented
in FIG. 1. By this swiveling motion, the side 101 of the top part
10 that is positioned away from the top part 11 comes closer to the
top part 11 and to the swivel axis X-X. In other words, the
convertible top 10, 11 is buckled around the axis Y-Y.
[0018] In FIG. 3, the convertible top system 13 has reached the
final position of its motion. After its buckling around the movable
axis Y-Y, the top part 10 is in an almost anti-parallel position to
the top part 11 that itself has been swiveled around the axis X-X
by an angle of between 90.degree. and 180.degree.. Here, the side
101 that is positioned away from the top part 10 has come to a
position close to the drive 19.
[0019] The FIGS. 4 through 6 show the drive unit 12 in the
analogous positions to the top parts 10, 11 in the FIGS. 1 through
3. In FIG. 4, a fluid cylinder 121 is provided with an adjustable
piston 122 and inlets 123, 124 for a liquid or a gas into the
chambers 125, 126 that are formed and varied by the piston 122 in
the cylinder 121. At the cylinder 121, a coulisse 127 is rigidly
mounted and provided with guiding slots 130, 131 in two legs 128,
129 that are arranged in parallel to each other and to the
geometric axis Z-Z of the cylinder 121. Said slots are used for a
guide unit 132 that is connected with the piston 122 for example
via a not visible rod. Brackets 133, 134 are rigidly mounted with
the cylinder 121 or the coulisse 127 and are used to connect the
drive unit 12 at the top part 11 in such a way that the cylinder
axis Z-Z is positioned mainly in the direction of motion of the top
parts 10, 11. At and between the legs 128, 129 a double-armed lever
135 is supported so that it can swivel around the movable axis Y-Y.
At its shorter end, this lever 135 is connected to the guide unit
132 and the covered piston rod via a connection piece consisting of
two links 136. A bearing bolt 137 that is screwed into the legs
128, 129 below the guiding slots 130, 131 is used to support the
double-armed lever 135 between the legs 128, 129. At its longer
end, the double-armed lever 135 is rigidly mounted with the top
part 10. In this example the whole system is arranged in such a
manner that the drive unit 12 and the top parts 10, 11 have a
common plane of motion.
[0020] If the convertible top is to be opened, a fluid of a not
shown reservoir is pressed through the inlet 123 into the chamber
125 according to the function of the control unit 21 and thus the
piston 122 is moved in the cylinder 121 towards the inlet 124.
Consequently, the guide unit 132 is moved in the coulisse 127
towards the other end of the guide and the double-armed lever 135,
the longer end of which is slightly inclined relative to the axis
Z-Z, is further rotated via the links 136 around the axis Y-Y
according to an arrow 138. Thus, an intermediate position is
reached that is for example represented in FIG. 5. In this
position, the guide unit 132 is displaced in the guiding slots 130,
131 so that the links 136 press the shorter end of the double-armed
lever 135 out of the coulisse 127 upwards and thus swivel the lever
135 around the bearing bolt 137. If the piston 122 in the cylinder
121 and the guide unit 132 in the guiding slots 130, 131 reach
their final positions that can be seen in FIG. 6, the links 136 are
mainly in a rectangular position and the lever 135 is mainly in an
antiparallel orientation to the axis Z-Z. This fact corresponds to
FIG. 3. However, one should consider that synchronously to the
swivel motion of the lever 135, the top part 11 at which the drive
unit 12 is fixed swivels around the axis X-X in a motion of
approximately the same value but in the opposite direction around
the axis X-X. Thus, the top part 10 is positioned above the top
part 11 in the open position.
[0021] If a fluid is pressed into the chamber via the inlet 124,
the motion goes in the opposite direction and in the reverse order
till the top parts 10, 11 come to their closed position.
[0022] It goes without saying that the invention is not bound to
the design described. It is for example possible that the
piston-cylinder-system is not only driven by a liquid or gas but
electrically. Then, the cylinder 121 can be fixed at the top part
10 and the piston 122 can be connected with the top part 11. If the
drive unit 12 is adjusted appropriately it is also possible that
the cylinder 121 moves relative to the piston 122. It is not
required that the final positions of the motion sequence differ by
180.degree. or almost 180.degree.. It is neither necessary that the
piece 136 is designed as links nor that the coulisse 127 has two
legs; just to mention only some deviating designs of this
invention
LIST OF REFERENCE NUMERALS
[0023] 10, 11 top parts [0024] 12 drive unit [0025] 13 convertible
top system [0026] 14 body [0027] 15 main bearing [0028] 16 points
of the connection [0029] 17 stiffening ribs [0030] 18 console
[0031] 19 fluid drive [0032] 20 lines [0033] 21 control unit [0034]
22 motion elements [0035] 101 side positioned away [0036] 121 fluid
cylinder [0037] 122 piston [0038] 123, 124 inlets [0039] 125, 126
chambers [0040] 127 coulisse [0041] 128, 129 legs [0042] 130, 131
guiding slots [0043] 132 guide unit [0044] 133, 134 brackets [0045]
135 lever [0046] 136 links [0047] 137 bearing bolt [0048] 138 arrow
[0049] X-X, Y-Y, Z-Z axes
* * * * *